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bcachefs: Handle -EINTR bch2_migrate_index_update()

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peek_slot() shouldn't return -EINTR when there's only a single live
iterator, but that's tricky to guarantee - we seem to be returning
-EINTR when we shouldn't, but it's easy enough to handle in the caller.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-04-24 14:08:56 -04:00 committed by Kent Overstreet
parent 41697f382c
commit 2c480a7102
1 changed files with 11 additions and 4 deletions
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15
fs/bcachefs/move.c
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@ -69,19 +69,26 @@ static int bch2_migrate_index_update(struct bch_write_op *op)
BTREE_ITER_SLOTS|BTREE_ITER_INTENT);
while (1) {
struct bkey_s_c k = bch2_btree_iter_peek_slot(iter);
struct bkey_s_c k;
struct bkey_i *insert;
struct bkey_i_extent *new =
bkey_i_to_extent(bch2_keylist_front(keys));
struct bkey_i_extent *new;
BKEY_PADDED(k) _new, _insert;
const union bch_extent_entry *entry;
struct extent_ptr_decoded p;
bool did_work = false;
int nr;
bch2_trans_reset(&trans, 0);
k = bch2_btree_iter_peek_slot(iter);
ret = bkey_err(k);
if (ret)
if (ret) {
if (ret == -EINTR)
continue;
break;
}
new = bkey_i_to_extent(bch2_keylist_front(keys));
if (bversion_cmp(k.k->version, new->k.version) ||
!bch2_bkey_matches_ptr(c, k, m->ptr, m->offset))